The North Dakota Income Tax Increase and Withholding Referendum, also known as Measure 2, was on the March 18, 1987 ballot in North Dakota as a legislatively-referred state statute, where it was approved.[1] The measure provided an increase in the individual income tax rate for long-form and short-form filing. It also required the withholding of state income taxes from employee's wages and the filing of a declaration of estimated state income tax payments.[2]